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Merge pull request #937 from minrk/readline...
Merge pull request #937 from minrk/readline Add dirty trick for readline import on OSX to more aggressively detect the presence of libedit masquerading as true GNU readline. Also made the libedit warning extremely loud, so people don't miss it. See the original PR page for the gory details; short version: 1. remove lib-dynload from sys.path before trying to import readline the first time 2. after import, restore lib-dynload to its place in sys.path 3. if import failed without lib-dynload, try it one more time, to get the default module

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ipy_signals.py
61 lines | 1.6 KiB | text/x-python | PythonLexer
""" Advanced signal (e.g. ctrl+C) handling for IPython
So far, this only ignores ctrl + C in IPython file a subprocess
is executing, to get closer to how a "proper" shell behaves.
Other signal processing may be implemented later on.
If _ip.options.verbose is true, show exit status if nonzero
"""
import signal,os,sys
from IPython.core import ipapi
import subprocess
ip = ipapi.get()
def new_ipsystem_posix(cmd):
""" ctrl+c ignoring replacement for system() command in iplib.
Ignore ctrl + c in IPython process during the command execution.
The subprocess will still get the ctrl + c signal.
posix implementation
"""
p = subprocess.Popen(cmd, shell = True)
old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
pid,status = os.waitpid(p.pid,0)
signal.signal(signal.SIGINT, old_handler)
if status and ip.options.verbose:
print "[exit status: %d]" % status
def new_ipsystem_win32(cmd):
""" ctrl+c ignoring replacement for system() command in iplib.
Ignore ctrl + c in IPython process during the command execution.
The subprocess will still get the ctrl + c signal.
win32 implementation
"""
old_handler = signal.signal(signal.SIGINT, signal.SIG_IGN)
status = os.system(cmd)
signal.signal(signal.SIGINT, old_handler)
if status and ip.options.verbose:
print "[exit status: %d]" % status
def init():
o = ip.options
try:
o.verbose
except AttributeError:
o.allow_new_attr (True )
o.verbose = 0
ip.system = (sys.platform == 'win32' and new_ipsystem_win32 or
new_ipsystem_posix)
init()